在心力衰竭和较高左心室喷射分数范围的患者中观察到独特的左心室-动脉和右心室-肺动脉合
Nobuyuki Ohte1, Shohei Kikuchi1, Noriaki Iwahashi2
1Department of Cardiology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan.
European heart journal. Cardiovascular Imaging
|January 29, 2024
概括
在心力衰竭中,喷射分数 (EF) 高,喷射分数 (HFpEF) 保存的患者面临更糟糕的结果. 这项研究显示,心室 - 动脉和心室 - 肺合障碍有助于这种不良预后.
科学领域:
- 心脏病学 心脏病学
- 心脏衰竭研究研究
- 血液动力学 血液动力学
背景情况:
- 更高的左心室 (LV) 喷射分数 (EF) 矛盾地与保留喷射分数 (HFpEF) 的心力衰竭预后更差有关.
- 这种关联背后的血液动力学机制需要澄清.
- 了解这些机制对于改善HFpEF患者的结果至关重要.
研究的目的:
- 调查高高血压表患者的不良预后的血液动力学基础.
- 分析与LVEF和预后有关的左心室 - 动脉 (LV-A) 和右心室 - 肺动脉 (RV-PA) 的合.
- 为了确定预测HFpEF生存的关键合参数.
主要方法:
- 对255名住院急性不补偿性心力衰竭患者进行前性队列研究,LVEF> 40%.
- 患者被分为轻度降低EF (HFmrEF),HFpEF (50% ≤ LVEF < 60%) 和HFpEF (LVEF ≥ 60%) 的HF.
- 评估了LV末缩弹性 (Ees),有效动脉弹性 (Ea),Ees/Ea (LV-A合) 和三环状平面到峰值肺动脉缩压 (TAPSE/PASP) (RV-PA合).
主要成果:
- 较高的LVEF组表现出更差的全因死亡率和HF无再入院生存率.
- 在较高的LVEF时,LV-动脉合 (Ees/Ea) 显著增加,特别是在HFpEF (LVEF ≥60%) 中.
- 虽然肺动脉缩压 (PASP) 增加,但TAPSE/PASP没有差异;然而,TAPSE/PASP独立预测无事件存活率.
结论:
- 具有较高LVEF的HFpEF患者表现出明显的LV-A合与升高的Ees/Ea.
- 由TAPSE/PASP表示的受损的RV-PA合,是这些患者预后不佳的重要独立预测因素.
- 这些发现强调了评估LV-A和RV-PA合对HFpEF风险分层的重要性.
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